hertz vs cps

hertz and cps both are nouns.

Word	Noun	Adjective	Verb	Adverb
hertz	Yes	No	No	No
cps	Yes	No	No	No

As nouns, hertz and cps are synonyms defined as:

hertz and cps: the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)

Other synonyms of hertz include cycle, cycle per second, cycles/second, Hz.

hertz (noun)	cps (noun)
the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)	the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)